Online Hash Generator – MD5, SHA, Bcrypt & Argon2
Online Hash Generator – secure fingerprints for your data
Use this online Hash Generator whenever you need to turn a piece of text into a fixed, unique-looking fingerprint. It lets you create MD5, SHA and other hash values for testing APIs, checking data integrity or preparing technical documentation. Paste your text, choose the algorithm and optionally add a salt if you want different outputs even for identical inputs.
This tool is ideal for developers, site owners and security-conscious marketers who want to experiment with hashing without touching live code. Generate hashes in your browser, copy the result into your project and, if you need deeper monitoring and SEO audits, upgrade to the SEO Expert plan for the full SEOcheck.hu toolkit.
When should you use a hash generator?
Use this tool whenever you need reproducible hashes in your development or QA workflow: for example when comparing API responses, checking file integrity, creating test fixtures or demonstrating how password hashing works.
Practical tips for secure hashing
Never store raw MD5 or SHA1 hashes for real user passwords. For anything security sensitive always use bcrypt or Argon2, combined with a strong salt and proper configuration. This tool helps you understand the output format, but real implementations must be handled in your application code or framework.
Common algorithms available in this tool
- BLAKE2b generator: very fast and secure modern hash algorithm with 64-byte (512-bit) output.
- BLAKE2s generator: a lighter member of the BLAKE2 family with 32-byte (256-bit) hashes.
- MD5 generator: simple 128-bit hash; fine for checksums, not for passwords.
- password_hash (argon2i / argon2id / bcrypt): password hashing algorithms with built-in salt and strong parameters.
- RIPEMD160 generator: hash often used in digital signatures and some blockchain systems.
- SHA-1 / SHA-224 / SHA-256 / SHA-384 / SHA-512: SHA-2 family, widely used for integrity and signatures (avoid SHA-1 for new systems).
- SHA3-224 / SHA3-256 / SHA3-384 / SHA3-512: modern SHA-3 family with sponge construction.
- sodium_crypto_pwhash (argon2id): strong password hashing via libsodium’s Argon2id implementation.
- Whirlpool generator: 512-bit cryptographic hash designed for high security.
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